TriMas Ownership | Who Owns TriMas?

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TriMas Ownership Summary

TriMas is owned by 43.45% institutional investors, 25.16% insiders, and 31.39% retail investors. Vanguard group is the largest institutional shareholder, holding 8.82% of TRS shares. Allspring Special Small Cap Value A is the top mutual fund, with 4.75% of its assets in TriMas shares.

TRS Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	TriMas	43.45%	25.16%	31.39%
Sector	Consumer Cyclical Stocks	249.86%	15.44%	-165.30%
Industry	Packaging & Containers Stocks	51.05%	20.71%	28.24%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Vanguard group	3.58M	8.82%	$127.01M
Blackrock	3.13M	7.64%	$80.07M
Allspring global investments	2.51M	6.22%	$91.24M
Blackrock funding, inc. /de	2.50M	6.18%	$89.74M
Dimensional fund advisors lp	2.26M	5.60%	$81.22M
Jefferies financial group	1.55M	3.84%	$55.69M
Morgan stanley	1.49M	3.69%	$53.59M
Permian investment partners, lp	1.20M	2.98%	$43.22M
Advisory research	1.12M	2.77%	$40.24M
Geode capital management	872.54K	2.16%	$31.36M

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Advisory research	1.12M	4.95%	$40.24M
Permian investment partners, lp	1.20M	4.78%	$43.22M
Bellecapital	685.86K	4.58%	$24.65M
Kestrel investment management	149.55K	3.21%	$5.37M
Alta fox capital management	223.45K	2.13%	$8.03M
Steel partners	54.06K	2.02%	$1.94M
Blue grotto capital	308.62K	1.38%	$11.93M
Newgen asset management	40.00K	0.56%	$1.44M
Punch & associates investment management	244.72K	0.51%	$8.80M
J. goldman & co lp	482.16K	0.47%	$18.63M

Top Buyers

Holder	Shares	% Assets	Change
Morgan stanley	1.49M	0.00%	687.68K
Sg americas securities	667.09K	0.03%	582.45K
Permian investment partners, lp	1.20M	4.78%	379.02K
Citadel advisors	444.88K	0.00%	347.90K
Blue grotto capital	308.62K	1.38%	308.62K

Top Sellers

Holder	Shares	% Assets	Change
Capital investors	-	-	-2.89M
Fiduciary management inc /wi/	-	-	-2.61M
River road asset management	-	-	-1.39M
Irenic capital management lp	-	-	-901.93K
Medina value partners	-	-	-544.19K

New Positions

Holder	Shares	% Assets	Change	Value
Blue grotto capital	308.62K	1.38%	308.62K	$11.93M
Punch & associates investment management	244.72K	0.51%	244.72K	$8.80M
Cubist systematic strategies	213.93K	0.04%	213.93K	$8.27M
Vanguard fiduciary trust	212.91K	0.00%	212.91K	$7.65M
Healthcare of ontario pension plan trust fund	195.20K	0.01%	195.20K	$7.02M

Sold Out

Holder	Change
Dunhill financial	-1.00
Ifp advisors	-1.00
Srs capital advisors	-6.00
Stone house investment management	-12.00
Stephens consulting	-15.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Mar 31, 2026	95	-53.43%	17,220,981	-52.93%	43	0.54%	43	-57.84%	30	-60.00%
Dec 31, 2025	139	-35.05%	27,388,268	-29.94%	67	0.73%	67	-41.23%	50	-30.56%
Sep 30, 2025	201	21.82%	38,894,545	0.97%	95	1.06%	107	28.92%	70	18.64%
Jun 30, 2025	165	7.14%	38,519,456	-3.02%	94	0.99%	83	-1.19%	59	28.26%
Mar 31, 2025	152	4.11%	39,677,465	-2.01%	97	0.98%	83	23.88%	45	-6.25%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
Allspring Special Small Cap Value A	1.70M	4.75%	-64.40K
FMI Common Stock Investor	1.45M	3.57%	-230.00K
Vanguard Total Stock Mkt Idx Inv	1.16M	3.25%	-
Vanguard US Total Market Shares ETF	1.15M	2.83%	-197.60K
Advisory Research Partners	975.00K	2.40%	-
Vanguard Small Cap Index	844.99K	2.36%	681.00
iShares Russell 2000 ETF	749.25K	2.09%	6.30K
Champlain Small Company Fund, LLC	739.28K	1.82%	-4.85K
Vanguard Small Cap Value Index Inv	540.51K	1.51%	2.92K
DFA US Small Cap Value I	435.82K	1.19%	11.70K

Recent Insider Transactions

Date	Name	Role	Activity	Value
May 13, 2026	Tredwell Daniel P	-	Buy	$2.52K
May 05, 2026	Robin Jodi F.	General Counsel and Secretary	Sell	$123.28K
May 07, 2026	Robin Jodi F.	General Counsel and Secretary	Sell	$83.21K
Mar 05, 2026	Tredwell Daniel P	-	Buy	$2.35K
Nov 12, 2025	Tredwell Daniel P	-	Buy	$2.35K

Insider Transactions Trends

Date	Buy	Sell
2026 Q2	1	2
2026 Q1	1	-
2025 Q4	2	-
2025 Q3	1	-
2025 Q2	11	-

TRS Ownership FAQ

Who Owns TriMas?

TriMas shareholders are primarily institutional investors at 43.45%, followed by 25.16% insiders and 31.39% retail investors. The average institutional ownership in TriMas's industry, Packaging & Containers Stocks , is 51.05%, which TriMas falls below.

Who owns the most shares of TriMas?

TriMas’s largest shareholders are Vanguard group (3.58M shares, 8.82%), Blackrock (3.13M shares, 7.64%), and Allspring global investments (2.51M shares, 6.22%). Together, they hold 22.67% of TriMas’s total shares outstanding.

Does Blackrock own TriMas?

Yes, BlackRock owns 7.64% of TriMas, totaling 3.13M shares as of Jun 2024. This represents 0.00% of BlackRock's total assets, with a market value of 80.07M$. In the last quarter, BlackRock decreased its holdings by -27.274K shares, a -0.86% change.

Who is TriMas’s biggest shareholder by percentage of total assets invested?

Advisory research is TriMas’s biggest shareholder by percentage of total assets invested, with 4.95% of its assets in 1.12M TriMas shares, valued at 40.24M$.

Who is the top mutual fund holder of TriMas shares?

Allspring Special Small Cap Value A is the top mutual fund holder of TriMas shares, with 4.75% of its total shares outstanding invested in 1.7M TriMas shares.

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